babel-errors

library1.1.1jsnpmunverified

A library for creating nicer error messages with code frames for Babel transformations and plugins. Current stable version 1.1.1 provides utilities like buildCodeFrameError, prettyError, wrapErrorWithCodeFrame, and createErrorWithLoc. Sporadically maintained, it differentiates from Babel's built-in error formatting by offering explicit functions to construct location-aware errors outside the plugin context.

serialization

npm install babel-errors

package ↗

INSTALL

IMPORT

SIG · BABEL-ERRORS

babel-errors

serializationjavascriptv1.1.1

Install

—

Import

—

Disk

—

Pass rate

0/ 6

Env Coverage0 / 6

glibc

18–22

musl

18–22

Install & Compatibility

Where this runs

tested against v? · npm install

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

node 18–226 runs

build_error

glibc

node 18–226 runs

build_error

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

BabelError

✓ import { BabelError } from 'babel-errors'

✗ import BabelError from 'babel-errors'

Named export, not default.

prettyError

✓ import { prettyError } from 'babel-errors'

✗ const prettyError = require('babel-errors').prettyError

Named export, prefer ESM.

buildCodeFrameError

✓ import { buildCodeFrameError } from 'babel-errors'

✗ import buildCodeFrameError from 'babel-errors/buildCodeFrameError'

Named export from package root, no subpath.

Demonstrates creating errors with location and building code frame errors using babel-errors with a simple AST.

import { buildCodeFrameError, createErrorWithLoc } from 'babel-errors'; import { parse } from '@babel/parser'; import generate from '@babel/generator'; const code = 'const x = 1;'; const ast = parse(code, { sourceType: 'module' }); const { path } = ast; // Throw an error with location const line = 1, column = 6; const err = createErrorWithLoc('Test error at position', line, column); console.log(err.message); console.log('Name:', err.name); // BabelError // Use buildCodeFrameError with a path try { buildCodeFrameError(path, 'Error with this Path'); } catch (e) { console.log(e.message); }

Debug

Known issues

gotchabuildCodeFrameError requires a Babel NodePath object; passing a plain object will throw without clear error.

fix

Ensure argument is a valid Babel Path (e.g., from traversal).

affects: <=1.1.1

deprecatedFunction toErrorStack is deprecated; use error.stack or custom formatting instead.

fix

Use error.stack or manual format.

affects: >=1.0.0

gotchawrapErrorWithCodeFrame only adds code frame if the error has line/column properties; otherwise returns original error silently.

fix

Ensure error has loc property (use createErrorWithLoc).

affects: <=1.1.1

Errors

Common errors & fixes

Error: Cannot find module 'babel-code-frame'

Missing peer dependency babel-code-frame.

fix

Run npm install babel-code-frame.

TypeError: path.buildCodeFrameError is not a function

Trying to use babel-errors' buildCodeFrameError as a method on a Path object.

fix

Call buildCodeFrameError(path, message) as a standalone function.

Uncaught TypeError: createErrorWithLoc is not a function

Importing as default instead of named export.

fix

Use import { createErrorWithLoc } from 'babel-errors'.

Upgrade

Version history

1.1.1latest on npm

Audit

Dependencies

babel-code-framerequiredrequired to generate code frame string in errors

Agent activity

16 hits · last 30 days

node

OpenAI (training)

Resources

packagehttps://www.npmjs.com/package/babel-errors ↗